Include host_defines.h in hip_fp16.h since it uses __host__ __device__ attributes

[ROCm/hip commit: 02b160491d]

projects/hip/include/hip/hcc_detail/hip_fp16.h

@@ -21,7 +21,7 @@ THE SOFTWARE.
 */
 
 #pragma once
-
+#include "hip/hcc_detail/host_defines.h"
 #include <assert.h>
 #if defined(__cplusplus)
     #include <algorithm>